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/* abGate - LV2 Noise Gate Plugin
*
* Copyright 2011 Antanas Bružas
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "toggle.h"
using namespace std;
toggle::toggle(const sigc::slot<void> toggle_slot) :
a_tog(new Adjustment(0, 0, 1, 1, 1, 0)) {
set_events(Gdk::EXPOSURE_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
set_double_buffered(true);
// Setting bypass images
on = Gdk::Pixbuf::create_from_file(BYPASS_ON_PNG);
off = Gdk::Pixbuf::create_from_file(BYPASS_OFF_PNG);
pixbuf = off;
connecting(a_tog, toggle_slot);
set_size_request(100, 100);
}
toggle::~toggle() {
}
void toggle::connecting(Adjustment* tog, const sigc::slot<void> slot) {
a_tog = tog;
// Triggering value_changed method when value of the toggle changes
a_tog->signal_value_changed().connect(mem_fun(*this, &toggle::value_changed));
// Updating LV2 port value when value of bypass changes
a_tog->signal_value_changed().connect(slot);
}
void toggle::value_changed() {
// Setting bypass value to either 1 or 0
float value = a_tog->get_value() > 0 ? 1 : 0;
// Changing the image of the toggle
pixbuf = value > 0 ? on : off;
// Also can be used like this: dis_sig.emit()
dis_sig();
}
bool toggle::on_expose_event(GdkEventExpose *event) {
if (event && pixbuf) {
// Drawing new pixbuf
m_drawable = get_window();
m_drawable->draw_pixbuf(get_style()->get_black_gc(), pixbuf, get_width(), -1, 0, 0, get_width(), get_height(), Gdk::RGB_DITHER_NONE, 0, 0);
// This one is deprecated: pixbuf->render_to_drawable(get_window(), get_style()->get_black_gc(), get_width(), -1, 0, 0, get_width(), get_height(), Gdk::RGB_DITHER_NONE, 0, 0);
}
return true;
}
bool toggle::on_button_press_event(GdkEventButton *event) {
// Updating bypass value
float value = a_tog->get_value() > 0 ? 0 : 1;
a_tog->set_value(value);
return true;
}
bool toggle::on_button_release_event(GdkEventButton *event) {
if (has_grab()) {
remove_modal_grab();
}
return true;
}
// Returns bypass value
float toggle::get_toggle_value() {
return a_tog->get_value();
}
// Sets bypass value
void toggle::set_toggle_value(float value) {
a_tog->set_value(value);
}
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